Shared Photos Stream in iOS 7 are turning out to be a much bigger deal than I first thought. After playing with them for a few hours it’s clear that they might actually be Apple’s first successful social network. Why? It’s all down to a little “Activity” tab inside the newly-named “Shared Streams.”

Shared Photo Streams are fantastic, of course, barring the niggling detail that only the person who creates them can add photos to them. Sometimes, though, as with all tech, things don’t necessarily work the way they should. For example, sometimes you won’t be able to see comments that have been posted by subscribers. Other times, deleting a comment from a shared Photo Stream via iPhoto or Aperture won’t be reflected on your iPhone.

We got a couple of comments yesterday on our tip about using shared Photo Streams on iOS devices. One of them was how to add new people to a Photo Stream once it’s been created. It’s fairly unintuitive (Apple, are you listening?), so here’s a quick step-by-step on how to do so.

We constantly share our snapshots from our iPhones to Twitter and Facebook, we send them via e-mail and iMessage, print them from our phones, and even share them to group sites like Picasa and Flickr. It’s a veritable frenzy of photo sharing!

It’s all really amazing and fun, of course, but what about those times we just want to share our photos with a select group of friends or family members? Setting up special lists in Facebook or Flickr can be unintuitive and tricky, so chances are good that it doesn’t happen that often.

Luckily, Apple’s got shared Photo Streams in the new iOS 6, and it’s fairly straightforward to set up. Here’s how.